db

package
v0.12.0 Latest Latest
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 Go to latest Published: Nov 5, 2015 License: MPL-2.0 Imports: 20 Imported by: 0

Documentation

Overview

Package db provides a set type to track local/remote files with newness checks. We must do a certain amount of normalization in here. We will get fed paths with either native or wire-format separators and encodings depending on who calls us. We transform paths to wire-format (NFC and slashes) on the way to the database, and transform to native format (varying separator and encoding) on the way back out.

Package db provides a set type to track local/remote files with newness checks. We must do a certain amount of normalization in here. We will get fed paths with either native or wire-format separators and encodings depending on who calls us. We transform paths to wire-format (NFC and slashes) on the way to the database, and transform to native format (varying separator and encoding) on the way back out.

Index

Constants

View Source 
const (
	KeyTypeDevice = iota
	KeyTypeGlobal
	KeyTypeBlock
	KeyTypeDeviceStatistic
	KeyTypeFolderStatistic
	KeyTypeVirtualMtime
)

Variables

This section is empty.

Functions

func BlocksToSize 

func BlocksToSize(num int) int64

func DropFolder 

func DropFolder(db *Instance, folder string)

DropFolder clears out all information related to the given folder from the database.

Types

type BlockFinder 

type BlockFinder struct {
	// contains filtered or unexported fields
}

func NewBlockFinder 

func NewBlockFinder(db *Instance) *BlockFinder

func (*BlockFinder) Fix 

func (f *BlockFinder) Fix(folder, file string, index int32, oldHash, newHash []byte) error

Fix repairs incorrect blockmap entries, removing the old entry and replacing it with a new entry for the given block

func (*BlockFinder) Iterate 

func (f *BlockFinder) Iterate(folders []string, hash []byte, iterFn func(string, string, int32) bool) bool

Iterate takes an iterator function which iterates over all matching blocks for the given hash. The iterator function has to return either true (if they are happy with the block) or false to continue iterating for whatever reason. The iterator finally returns the result, whether or not a satisfying block was eventually found.

func (*BlockFinder) String 

func (f *BlockFinder) String() string

type BlockMap 

type BlockMap struct {
	// contains filtered or unexported fields
}

func NewBlockMap 

func NewBlockMap(db *Instance, folder string) *BlockMap

func (*BlockMap) Add 

func (m *BlockMap) Add(files []protocol.FileInfo) error

Add files to the block map, ignoring any deleted or invalid files.

func (*BlockMap) Discard 

func (m *BlockMap) Discard(files []protocol.FileInfo) error

Discard block map state, removing the given files

func (*BlockMap) Drop 

func (m *BlockMap) Drop() error

Drop block map, removing all entries related to this block map from the db.

func (*BlockMap) Update 

func (m *BlockMap) Update(files []protocol.FileInfo) error

Update block map state, removing any deleted or invalid files.

type FileInfoTruncated 

type FileInfoTruncated struct {
	protocol.FileInfo
}

func (*FileInfoTruncated) DecodeXDRFrom added in v0.12.0 

func (o *FileInfoTruncated) DecodeXDRFrom(xr *xdr.Reader) error

func (*FileInfoTruncated) UnmarshalXDR 

func (o *FileInfoTruncated) UnmarshalXDR(bs []byte) error

type FileIntf 

type FileIntf interface {
	Size() int64
	IsDeleted() bool
	IsInvalid() bool
	IsDirectory() bool
	IsSymlink() bool
	HasPermissionBits() bool
}

FileIntf is the set of methods implemented by both protocol.FileInfo and protocol.FileInfoTruncated.

type FileSet 

type FileSet struct {
	// contains filtered or unexported fields
}

func NewFileSet 

func NewFileSet(folder string, db *Instance) *FileSet

func (*FileSet) Availability 

func (s *FileSet) Availability(file string) []protocol.DeviceID

func (*FileSet) Get 

func (s *FileSet) Get(device protocol.DeviceID, file string) (protocol.FileInfo, bool)

func (*FileSet) GetGlobal 

func (s *FileSet) GetGlobal(file string) (protocol.FileInfo, bool)

func (*FileSet) GetGlobalTruncated 

func (s *FileSet) GetGlobalTruncated(file string) (FileInfoTruncated, bool)

func (*FileSet) GlobalSize added in v0.12.0 

func (s *FileSet) GlobalSize() (files, deleted int, bytes int64)

func (*FileSet) LocalSize added in v0.12.0 

func (s *FileSet) LocalSize() (files, deleted int, bytes int64)

func (*FileSet) LocalVersion 

func (s *FileSet) LocalVersion(device protocol.DeviceID) int64

func (*FileSet) Replace 

func (s *FileSet) Replace(device protocol.DeviceID, fs []protocol.FileInfo)

func (*FileSet) Update 

func (s *FileSet) Update(device protocol.DeviceID, fs []protocol.FileInfo)

func (*FileSet) WithGlobal 

func (s *FileSet) WithGlobal(fn Iterator)

func (*FileSet) WithGlobalTruncated 

func (s *FileSet) WithGlobalTruncated(fn Iterator)

func (*FileSet) WithHave 

func (s *FileSet) WithHave(device protocol.DeviceID, fn Iterator)

func (*FileSet) WithHaveTruncated 

func (s *FileSet) WithHaveTruncated(device protocol.DeviceID, fn Iterator)

func (*FileSet) WithNeed 

func (s *FileSet) WithNeed(device protocol.DeviceID, fn Iterator)

func (*FileSet) WithNeedTruncated 

func (s *FileSet) WithNeedTruncated(device protocol.DeviceID, fn Iterator)

func (*FileSet) WithPrefixedGlobalTruncated 

func (s *FileSet) WithPrefixedGlobalTruncated(prefix string, fn Iterator)

type Instance added in v0.12.0 

type Instance struct {
	*leveldb.DB
}

func Open added in v0.12.0 

func Open(file string) (*Instance, error)

func OpenMemory added in v0.12.0 

func OpenMemory() *Instance

func (*Instance) ListFolders added in v0.12.0 

func (db *Instance) ListFolders() []string

type Iterator 

type Iterator func(f FileIntf) bool

The Iterator is called with either a protocol.FileInfo or a protocol.FileInfoTruncated (depending on the method) and returns true to continue iteration, false to stop.

type NamespacedKV 

type NamespacedKV struct {
	// contains filtered or unexported fields
}

NamespacedKV is a simple key-value store using a specific namespace within a leveldb.

func NewNamespacedKV 

func NewNamespacedKV(db *Instance, prefix string) *NamespacedKV

NewNamespacedKV returns a new NamespacedKV that lives in the namespace specified by the prefix.

func (NamespacedKV) Bool 

func (n NamespacedKV) Bool(key string) (bool, bool)

Bool returns the stored value as a boolean and a boolean that is false if no value was stored at the key.

func (NamespacedKV) Bytes 

func (n NamespacedKV) Bytes(key string) ([]byte, bool)

Bytes returns the stored value as a raw byte slice and a boolean that is false if no value was stored at the key.

func (NamespacedKV) Delete 

func (n NamespacedKV) Delete(key string)

Delete deletes the specified key. It is allowed to delete a nonexistent key.

func (*NamespacedKV) Int64 

func (n *NamespacedKV) Int64(key string) (int64, bool)

Int64 returns the stored value interpreted as an int64 and a boolean that is false if no value was stored at the key.

func (*NamespacedKV) PutBool 

func (n *NamespacedKV) PutBool(key string, val bool)

PutBool stores a new boolean. Any existing value (even if of another type) is overwritten.

func (*NamespacedKV) PutBytes 

func (n *NamespacedKV) PutBytes(key string, val []byte)

PutBytes stores a new byte slice. Any existing value (even if of another type) is overwritten.

func (*NamespacedKV) PutInt64 

func (n *NamespacedKV) PutInt64(key string, val int64)

PutInt64 stores a new int64. Any existing value (even if of another type) is overwritten.

func (*NamespacedKV) PutString 

func (n *NamespacedKV) PutString(key, val string)

PutString stores a new string. Any existing value (even if of another type) is overwritten.

func (*NamespacedKV) PutTime 

func (n *NamespacedKV) PutTime(key string, val time.Time)

PutTime stores a new time.Time. Any existing value (even if of another type) is overwritten.

func (*NamespacedKV) Reset 

func (n *NamespacedKV) Reset()

Reset removes all entries in this namespace.

func (NamespacedKV) String 

func (n NamespacedKV) String(key string) (string, bool)

String returns the stored value interpreted as a string and a boolean that is false if no value was stored at the key.

func (NamespacedKV) Time 

func (n NamespacedKV) Time(key string) (time.Time, bool)

Time returns the stored value interpreted as a time.Time and a boolean that is false if no value was stored at the key.

type VirtualMtimeRepo 

type VirtualMtimeRepo struct {
	// contains filtered or unexported fields
}

func NewVirtualMtimeRepo 

func NewVirtualMtimeRepo(ldb *Instance, folder string) *VirtualMtimeRepo

func (*VirtualMtimeRepo) DeleteMtime 

func (r *VirtualMtimeRepo) DeleteMtime(path string)

func (*VirtualMtimeRepo) Drop 

func (r *VirtualMtimeRepo) Drop()

func (*VirtualMtimeRepo) GetMtime 

func (r *VirtualMtimeRepo) GetMtime(path string, diskMtime time.Time) time.Time

func (*VirtualMtimeRepo) UpdateMtime 

func (r *VirtualMtimeRepo) UpdateMtime(path string, diskMtime, actualMtime time.Time)

Source Files

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